This essay, originally published by n+1, introduces a collective project of inquiry into the history of the US workers’ movement, taking the form of a Haymarket Originals podcast, Fragile Juggernaut, and an accompanying newsletter series. After decades of defeat, workers are on the move again. Many of those interested today in a revived labor movement know that unions once exercised real sway over the national economy and politics in the US. And the distant memory of how the labor movement was